I am grayed out from signing in or out of ArcGIS Online in ArcMap.

We started with an online account before getting Enterprise. I cannot switch between those accounts when one is grayed out. I want to open and republish the maps from our online account and re share them to our Portal. How do I resolve this?

Yeah it did it again. Once it released I could use our other login for our ArcGIS Online and open the map then saved a copy, then signed in to our portal and tried to share the service, but not working for some reason. Now it is grayed out and automatically connects to our portal.